Vectors Flashcards
1
Q
Cartesian products
A
Points in computer graphics (vector quantities)
2
Q
Vector addition / subtraction
A
Sum / subtract the elements at their corresponding positions
3
Q
Vector magnitude
A
Found using Pythagoras Theorem
(can be used for n-dimensional vectors)
4
Q
How do you get a normlaized vector?
A
Divide the vector by it’s magnitude
5
Q
Define the two ways of multiplying vectors
A
Cross Product
Dot Product / Scalar Product
6
Q
Dot Product
A
Multiply the corresponding elements
using the dot product on vectors gives us a scalar product
Using the dot product on matrices gives us a new matrix
7
Q
Uses of the dot product
A
Can compute the square of the magnitude of a vector by multiplying the vector by itself
Can compute the angle between two vectors: a . b = |a||b|cos(theta)
